chore(deps): update thiserror to v2

Supersedes #344

Author: james-crabnebula

Cargo.lock

@@ -15,7 +15,7 @@ license = "Apache-2.0 OR MIT"
 repository = "https://github.com/crabnebula-dev/cargo-packager"
 
 [workspace.dependencies]
-thiserror = "1.0"
+thiserror = "2"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 dunce = "1"